When os_mem_prealloc() fails, file_ram_alloc() calls qemu_ram_munmap()
and returns null. Except it doesn't when its @errp argument is null,
because it checks for failure with (errp && *errp). Introduced in
commit 056b68af77 "fix qemu exit on memory hotplug when allocation
fails at prealloc time".
No caller actually passes null.
Fix anyway: splice in a local Error *err, and error_propagate().
Cc: Igor Mammedov <address@hidden>
Signed-off-by: Markus Armbruster <address@hidden>
Reviewed-by: Igor Mammedov <address@hidden>
---
exec.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/exec.c b/exec.c
index ffdb518535..45695a5f2d 100644
--- a/exec.c
+++ b/exec.c
@@ -1841,6 +1841,7 @@ static void *file_ram_alloc(RAMBlock *block,
bool truncate,
Error **errp)
{
+ Error *err = NULL;
MachineState *ms = MACHINE(qdev_get_machine());
void *area;
@@ -1898,8 +1899,9 @@ static void *file_ram_alloc(RAMBlock *block,
}
if (mem_prealloc) {
- os_mem_prealloc(fd, area, memory, ms->smp.cpus, errp);
- if (errp && *errp) {
+ os_mem_prealloc(fd, area, memory, ms->smp.cpus, &err);
+ if (err) {
+ error_propagate(errp, err);
qemu_ram_munmap(fd, area, memory);
return NULL;
}